Active Suspension Rhythmic Control Using Audio Frequency Signals

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Solution Overview

Problem

Existing vehicles fail to meet users' personalized entertainment requirements when stationary, lacking interactive features that enhance user experience through rhythmic movements synchronized with audio signals.

Innovation Solution

An active suspension system in vehicles adjusts its movement based on frequency signals from audio signals, enabling rhythmic actions such as jumping and pressing down, synchronized with music, using motors and dampers to alter the vehicle's height and speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the vehicle remains stationary during user interaction, then safety and stability are maintained, but user entertainment requirements and personalization are not met

Engineering Contradiction:
Improveentertainment functionalityVSAvoidvehicle stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The suspension system transitions from a static state to a dynamic state by enabling rhythmic movements synchronized with music beats. The motor drives the suspension to perform periodic up-and-down motions, transforming the vehicle from a completely stationary state to one with controlled dynamic behavior that provides entertainment while maintaining overall stability through controlled, rhythmic motion rather than random movement

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The suspension system performs periodic rhythmic movements synchronized with the beat frequency of music. The motor receives frequency signals from the audio system and generates corresponding periodic suspension adjustments, creating a rhythmic dancing effect that matches the music tempo while maintaining controlled, predictable motion patterns

Inventive Principle:
Principle #19Periodic action

2Adaptability or versatility

If the active suspension system performs rhythmic movements to provide entertainment, then user experience is improved, but energy consumption increases

Engineering Contradiction:
Improveentertainment functionalityVSAvoidenergy consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The system applies partial action by enabling rhythmic movements only during specific entertainment scenarios rather than continuous operation. The suspension performs rhythmic adjustments only when music playback is detected and user interaction is required, rather than operating continuously, thereby reducing overall energy consumption while providing entertainment when needed

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system changes operational parameters by adjusting motor power output based on music frequency signals. The motor varies its rotation speed and suspension adjustment magnitude according to the beat frequency and amplitude of the music, performing stronger rhythmic movements during high-energy music passages and reducing activity during quieter segments, thereby optimizing energy consumption according to actual entertainment needs

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This system enhances user experience by providing personalized entertainment through rhythmic vehicle movements, adapting to different scenarios and user preferences.

Implementation Method 1

a motor configured to adjust a rotation direction and a rotation speed based on an audio signal

Methodology Applied
Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

controlling an active suspension system of the vehicle to perform a rhythmic action based on the frequency signal

Methodology Applied
Scientific EffectAcoustic vibration: Vibration

Data Source

PatentEP4691809A1Control method for vehicle, and active suspension system, suspension control apparatus and vehicle
Publication Date: 2026.02.11 BYD CO LTD
  • EP4691809A1 patent drawingFigure 1~2
  • EP4691809A1 patent drawingFigure 3
  • EP4691809A1 patent drawingFigure 4

AI summary

A control method for a vehicle (100), an active suspension system (12), a suspension control apparatus (64), and a vehicle (100) are provided. The control method for a vehicle (100) includes: obtaining a frequency signal within a first frequency interval of an audio signal; and controlling an active suspension system (12) of the vehicle (100) to perform a rhythmic action based on the frequency signal.